Clog-type shoes and method for their production

Abstract

Clog-type shoes are produced by combining foamed polymeric soles with conventional vamps by interposing selected adhesives and application of pressure and heat to the assembled clog-type shoe.

I claim: 
     
       1. A method for producing a clog-type shoe having a sole and a vamp joined to the sole at the forward portion thereof for confining the front portion of a wearer's foot, the method comprising the steps of forming a sole having the configuration of a conventional clog-type shoe having an upper foot receiving surface, an opposed ground contacting surface and two opposed side surfaces therebetween which are generally perpendicular to the two first-named surfaces and along the length of the sole, a recess is located in each side surface adjacent to the forward portion of the sole and depending from the upper surface thereof adapted to receive a wing portion of the vamp in each such recess, the sole being at least partially formed of a foamed polymeric material,   roughening the upper foot receiving surface and the side surfaces within each of the recesses,   applying an adhesive to the roughened upper foot receiving surface,   placing a sockliner on the upper foot receiving surface to adhesively attach the sockliner to said surface,   skiving each of the wing portions of the vamp which will mate with the sole at the recesses,   applying a coat of an adhesive to each of the roughened recesses and to each of the corresponding skived portions of the wings of the vamp,   thermally activating the adhesive coatings on the sole and vamp,   spotting each of the wing portions of the vamp in its corresponding recess in the sole, and   pressing the vamp and sockliner against the sole to bond the vamp and sockliner to the sole permanently whereby a clog-type shoe is produced having greatly improved comfort over conventional wooden clogs while having a construction of generally equivalent durability.   
     
     
       2. A method according to claim 1, wherein the adhesive is applied to the roughened recesses and corresponding skived portions of the wings of the vamp in two successive operations by first applying a primer and then an adhesive. 
     
     
       3. A method according to claim 2, wherein the sole is formed of a foamed polyurethane material and the adhesives are urethane adhesives that are thermally activated between about 135° F. and 150° F. 
     
     
       4. A method according to claim 3, wherein simulated nailheads are applied to the outer side of the skived portions of the wings of the vamp prior to pressing the vamp into the roughened recesses in the sole. 
     
     
       5. A method according to claim 4, wherein the simulated nailheads are applied to the vamp by pressing hemispherical buttons having depending prongs thereon through the vamp and against an anvil. 
     
     
       6. A method according to claim 2, wherein a pressure of at least 15 pounds per square inch is applied to the sockliner to bond the sockliner to the sole while a pressure of at least 25 pounds per square inch is applied to the wings of the vamp to bond the vamp to the sole. 
     
     
       7. A method according to claim 6, wherein the pressures applied to the sockliner and vamp during bonding are about 20 and 35 pounds per square inch, respectively. 
     
     
       8. A method according to claim 2, wherein the sole is formed with contours on all lateral surfaces thereof to simulate wood graining and wherein dye is incorporated therein to cause the sole to be colored similar to wood.